the company is Ecoseat, their website is ecoseat.net and the phone number listed on the site is 704.248.4809
Their primary route is a charlotte to raleigh shuttle for corporate and government folks (which is what i am interested in). I called them and also asked about the asheville route.
The guy said its $50 per passenger if there are 3 or more OR you can charter the whole vehicle for $150. I asked about the type of vehicles and he said they were 09 honda minivans with leather.
their site claims the vehicles have internet and plug points
hope this helps